Ester-containing halopolyalkylenes
    3.
    发明授权
    Ester-containing halopolyalkylenes 失效
    含酯的卤代聚亚烷基

    公开(公告)号:US4617025A

    公开(公告)日:1986-10-14

    申请号:US725702

    申请日:1985-04-22

    IPC分类号: C08F8/00 C10L1/20

    CPC分类号: C10L1/206 C08F8/00

    摘要: This invention relates to polyalkylenes which contain both halogen and ester groups, to the preparation thereof, and to the use thereof as pour depressants for fuel oils. This invention also relates to polyalkylene esters.

    摘要翻译: 本发明涉及含有卤素和酯基的聚亚烷基,其制备方法以及作为燃料油的倾倒剂的用途。 本发明还涉及聚亚烷基酯。

    Shale stabilizer and method of use thereof
    10.
    发明授权
    Shale stabilizer and method of use thereof 失效
    页岩稳定剂及其使用方法

    公开(公告)号:US4757862A

    公开(公告)日:1988-07-19

    申请号:US899187

    申请日:1986-08-21

    IPC分类号: C09K8/035 C09K8/60 E21B33/138

    CPC分类号: C09K8/035 C09K8/608

    摘要: Water-soluble copolymers which are essentially free of cross-linking are useful as shale stabilizers. These copolymers are random copolymers of a vinyl carboxamide monomer and a hydroxy-containing vinyl carboxylic ester. These shale stabilizers are added to a drilling fluid which is then circulated through a well bore whereby the shale stabilizers come in contact with the shale formation and inhibit hydration of shale to prevent sloughing thereof.

    摘要翻译: 基本上不含交联的水溶性共聚物可用作页岩稳定剂。 这些共聚物是乙烯基甲酰胺单体和含羟基的乙烯基羧酸酯的无规共聚物。 将这些页岩稳定剂加入到钻井液中,钻井液然后通过井眼循环,由此页岩稳定剂与页岩层形成接触并阻止页岩的水化以防止其脱落。